Dynamic responses of hybrid FRP-concrete-steel double-skin tubular column (DSTC) under lateral impact

Wang, W; Wu, C; Yu, Y; Zeng, JJ

Dynamic responses of hybrid FRP-concrete-steel double-skin tubular column (DSTC) under lateral impact

Wang, W

Wu, C

Yu, Y

Zeng, JJ

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Structures, 2021, 32, pp. 1115-1144
Issue Date:: 2021-08-01

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Field	Value	Language
dc.contributor.author	Wang, W https://orcid.org/0000-0003-2782-8652
dc.contributor.author	Wu, C https://orcid.org/0000-0001-6786-7934
dc.contributor.author	Yu, Y https://orcid.org/0000-0001-9592-8191
dc.contributor.author	Zeng, JJ
dc.date.accessioned	2022-03-07T04:01:36Z
dc.date.available	2022-03-07T04:01:36Z
dc.date.issued	2021-08-01
dc.identifier.citation	Structures, 2021, 32, pp. 1115-1144
dc.identifier.issn	2352-0124
dc.identifier.issn	2352-0124
dc.identifier.uri	http://hdl.handle.net/10453/155014
dc.description.abstract	Hybrid fibre-reinforced polymer (FRP)-concrete-steel double-skin tubular column (DSTC) is a new form of composite column that consists of an outer FRP tube and an inner steel tube, with the space between them filled with concrete. Although many studies have been conducted on the hybrid DSTC, studies on its lateral impact behaviour are very limited. This study numerically investigates the dynamic responses of hybrid DSTC under lateral impact. Numerical models of the hybrid DSTCs were developed and validated with existing test results. Afterwards, the dynamic responses, including the deflection-time histories and the force–time histories, were analysed. Specifically, the bending moment and shear force distributions at typical cross sections were discussed, and the impact resistance (shear and flexure) from each component (FRP tube, concrete, and steel tube) was investigated. The results indicate that the hybrid DSTC exhibits ductile behaviour under lateral impact. Even though the FRP tube cannot contribute to the impact resistance directly, it can greatly improve the impact resistance of the concrete. Moreover, parametric analyses were conducted to investigate the influences of different parameters on the lateral impact resistance of hybrid DSTC. Finally, simplified design-oriented equations were developed to predict the dynamic flexural capacity of hybrid DSTC.
dc.language	English
dc.publisher	Elsevier
dc.relation	http://purl.org/au-research/grants/arc/DP160104661
dc.relation.ispartof	Structures
dc.relation.isbasedon	10.1016/j.istruc.2021.02.062
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 1202 Building
dc.title	Dynamic responses of hybrid FRP-concrete-steel double-skin tubular column (DSTC) under lateral impact
dc.type	Journal Article
utslib.citation.volume	32
utslib.for	0905 Civil Engineering
utslib.for	1202 Building
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2022-03-07T04:01:32Z
pubs.publication-status	Published
pubs.volume	32

Abstract:

Hybrid fibre-reinforced polymer (FRP)-concrete-steel double-skin tubular column (DSTC) is a new form of composite column that consists of an outer FRP tube and an inner steel tube, with the space between them filled with concrete. Although many studies have been conducted on the hybrid DSTC, studies on its lateral impact behaviour are very limited. This study numerically investigates the dynamic responses of hybrid DSTC under lateral impact. Numerical models of the hybrid DSTCs were developed and validated with existing test results. Afterwards, the dynamic responses, including the deflection-time histories and the force–time histories, were analysed. Specifically, the bending moment and shear force distributions at typical cross sections were discussed, and the impact resistance (shear and flexure) from each component (FRP tube, concrete, and steel tube) was investigated. The results indicate that the hybrid DSTC exhibits ductile behaviour under lateral impact. Even though the FRP tube cannot contribute to the impact resistance directly, it can greatly improve the impact resistance of the concrete. Moreover, parametric analyses were conducted to investigate the influences of different parameters on the lateral impact resistance of hybrid DSTC. Finally, simplified design-oriented equations were developed to predict the dynamic flexural capacity of hybrid DSTC.

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http://hdl.handle.net/10453/155014